Sources: 2006-2018 Current Population Survey, Annual Social and Economic Supplement for eligibility estimates for the 50 states and the District of Columbia; 2005-2017 Puerto Rico Community Survey for eligibility estimates for Puerto Rico; WIC administrative data for WIC participant data for all places; Census Bureau population data for potentially WIC-eligible population. Notes: All estimates are in average monthly terms. The line for “total population” refers to the number of people in a particular place who are either infants, young children (ages 1 through 4), pregnant, or postpartum mothers. State-level estimates of eligibility and coverage rates are subject to greater statistical uncertainty than national-level estimates, and some apparent year-to-year changes may be due entirely to sampling variability, especially in smaller states. See Chapter 6 of the full report for more information.